This 88-91 Honda CRX cold air intake is from Injen's original RD line.
Injen has got to be the last true engineers in the intake world. Compare an Injen intake to any other CRX intake and you can immediately tell that it's not just thicker, but are also shaped different. Unlike the other big names in intakes, Injen does NOT just simply copy your stock intake tube. Injen really cares about performance, so they spend a lot of time to design the absolute best intake for your CRX.
The RD line of intakes is Injen's classic line of cold airs. They are geared towards cars like the CRX that are relatively straight forward and don't require the more complicated (and expensive) features of their other intake lines. They are best for creating mid-range power. Also, as a cold air, it sits deeper and further forward in your engine bay in order to pull the "colder" air from outside.

Spyder Honda CRX Blue Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Blue Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Blue Cold Air Intake System comes with aluminum Blue intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.

Spyder Honda CRX Polish Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Polish Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Polish Cold Air Intake System comes with aluminum Polish intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.

Spyder Honda CRX Black Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Black Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Black Cold Air Intake System comes with aluminum Black intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.

Spyder Honda CRX Red Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Red Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Red Cold Air Intake System comes with aluminum Red intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.

Spyder Honda CRX Black Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Black Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Black Cold Air Intake System comes with aluminum Black intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.

There are many cold air and short ram intake companies in the market that make intake systems. Despite this, there is only one company that has become synonymous with performance filters: K&N.
K&N is the premier authority on automotive filtering, whether it be for Monster Trucks, Le Mans / F1 racing, or Import Drifting... everyone knows and respects K&N as a true performance company. That's why their FIPK intake line (short for Fuel Injection Performance Kit) is the premium intake system available for your vehicle.
Most intake companies use a standardized filter and mandrel bent aluminum piping for their intakes. While traditional short ram and ram air intake systems with this design usually look nice, they have blaring inherent flaws in their design. By limiting themselves to a generic cone filter and the restrictions of an aluminum pipe, they decrease the overall air flow potential for your car or truck.
K&N starts all of their FIPK intake system designs with the largest possible filter. As a veteran filter company, K&N knows that the larger the filter, the more air that can flow into your engine, which in turn, equals better performance. After that, they engineer a plastic intake tube for MAXIMUM airflow... which is why FIPK intakes sometimes have irregular looking bulges and curves. This custom designed plastic tube not only provides more airflow than a traditional aluminum pipe intake, it also ends up running quieter than the metal pipes that can unpredictably chatter and whistle.
The result is pure unadultered power that K&N backs up with actual dyno results. Also, unlike any other intake company, K&N supports all their filters and intakes with their famous "million mile warranty." So long as you run a K&N FIPK intake on the application it was designed for, don't go off roading or racing, and properly clean the filter every 50,000 miles, they will guarantee the product for an unbelievable 1,000,000 miles. Also, as K&N FIPK intakes are 50 state legal, you could add power to your vehicle with the peace of mind that comes from buying from the 35 year leader in automotive filters.
Please note that K&N intakes are very vehicle specific, so if you are unsure if this intake will fit your vehicle, please double check that you have the proper engine size and visit <a href="http://www.knfilters.com/search/VIN_part_search.aspx" target="_blank">K&N's VIN number search</a> to ensure you get the proper intake before purchasing.

There are many cold air and short ram intake companies in the market that make intake systems. Despite this, there is only one company that has become synonymous with performance filters: K&N.
K&N is the premier authority on automotive filtering, whether it be for Monster Trucks, Le Mans / F1 racing, or Import Drifting... everyone knows and respects K&N as a true performance company. That's why their FIPK intake line (short for Fuel Injection Performance Kit) is the premium intake system available for your vehicle.
Most intake companies use a standardized filter and mandrel bent aluminum piping for their intakes. While traditional short ram and ram air intake systems with this design usually look nice, they have blaring inherent flaws in their design. By limiting themselves to a generic cone filter and the restrictions of an aluminum pipe, they decrease the overall air flow potential for your car or truck.
K&N starts all of their FIPK intake system designs with the largest possible filter. As a veteran filter company, K&N knows that the larger the filter, the more air that can flow into your engine, which in turn, equals better performance. After that, they engineer a plastic intake tube for MAXIMUM airflow... which is why FIPK intakes sometimes have irregular looking bulges and curves. This custom designed plastic tube not only provides more airflow than a traditional aluminum pipe intake, it also ends up running quieter than the metal pipes that can unpredictably chatter and whistle.
The result is pure unadultered power that K&N backs up with actual dyno results. Also, unlike any other intake company, K&N supports all their filters and intakes with their famous "million mile warranty." So long as you run a K&N FIPK intake on the application it was designed for, don't go off roading or racing, and properly clean the filter every 50,000 miles, they will guarantee the product for an unbelievable 1,000,000 miles. Also, as K&N FIPK intakes are 50 state legal, you could add power to your vehicle with the peace of mind that comes from buying from the 35 year leader in automotive filters.
Please note that K&N intakes are very vehicle specific, so if you are unsure if this intake will fit your vehicle, please double check that you have the proper engine size and visit <a href="http://www.knfilters.com/search/VIN_part_search.aspx" target="_blank">K&N's VIN number search</a> to ensure you get the proper intake before purchasing.

Spyder Honda CRX Red Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Red Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Red Cold Air Intake System comes with aluminum Red intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.

Spyder Honda CRX Blue Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Blue Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Blue Cold Air Intake System comes with aluminum Blue intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.

Spyder Honda CRX Polish Cold Air Intake System helps to draw more and colder air to your engine than your stock Honda CRX air box setup. This Spyder Honda CRX Cold Air Polish Intake Kit will give you approximately 5-10 horsepower increase. Your results may vary, but the sound will definitely be more intense. This Spyder Honda CRX Polish Cold Air Intake System comes with aluminum Polish intake pipe, high flow washable & reusable stainless steel air filter, high pressure silicon hose and mounting accessories.